Climate Overview
The climate in Kotamangalam is hot. The average annual temperature is 26°C and approximately 3549mm of precipitation falls per year. Kotamangalam receives a notable amount of rainfall throughout the year, including during its driest month. Kotamangalam is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: March, February, April. The coldest months are January, December, February, when temperatures can drop to 21°C.
Temperature
Kotamangalam sees moderate temperature variation throughout the year, ranging from 21°C to 33°C. The warmest month is March, when average highs reach 33°C and the mean temperature sits around 28°C. January is the coolest month, with minimum temperatures around 21°C and an average of 26°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows.
Precipitation
Kotamangalam is a very wet location, receiving approximately 3549mm of precipitation annually, which averages out to around 296mm per month. The wettest month is August, averaging 481mm of rainfall. July and October also tend to see above-average precipitation. The driest month is February, with just 40mm. That's 441mm less than August, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.
Wind
Kotamangalam is relatively calm, with an average annual wind speed of 4km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is July, averaging 5km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 4km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.
Seasons
3 days until Autumn
It is currently summer in Kotamangalam, which began on June 21, 2026. Kotamangalam is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in March at around 33°C, while the coldest stretch bottoms out in January near 21°C. Autumn is next, beginning on September 23, 2026 (3 days from now).
Spring
Temperatures range from 24 to 33°C. Rainfall is heavy, totalling around 691mm across the season with a monthly average of 230mm. Winds are generally light, averaging 4km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 23 to 28°C. Rainfall is heavy, totalling around 1367mm across the season with a monthly average of 456mm. Winds are generally light, averaging 5km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.
Autumn
Temperatures range from 23 to 29°C. Rainfall is heavy, totalling around 1173mm across the season with a monthly average of 391mm. Winds are generally light, averaging 4km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 21 to 33°C. Rainfall is heavy, totalling around 318mm across the season with a monthly average of 106mm. Winds are generally light, averaging 5km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Monthly Climate Data
The table below shows monthly climate averages for Kotamangalam based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
